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Our Doxie, Ruby, 12 year old has hearing loss and is going blind. She has her two "sisters", another doxie and golden retriever that she uses to guide her. Ruby is a quiet dog, all of our dogs are actually.

Would anyone have suggestions on how to help change a recent behavior that has become a bit of an issue for our sleeping family?

Ruby - between 4-5 am - will start crying and barking to wake us in order to eat.

Our routine has always been to let our dogs out between 10 - 11 pm and they would come in and just settle in to sleep for the night until 6 - 7 am. In the morning, the dogs go outside and then have breakfast.
Since this behavior started, we tried ignoring it for a few mornings to not give in to her behavior. That didn't work ... so, we tried feeding three times a day instead of two (no extra food just dividing their portions) with the last feeding after their last outside time. This isn't working either.